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Internet Explorer Memory Corruption Weakness
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Secunia Advisory:
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SA23655
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Release Date:
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2007-01-09
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Last Update:
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2007-01-17
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Popularity:
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12,673 views
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Critical:
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Not critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | Microsoft Internet Explorer 6.x
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| CVE reference: | CVE-2007-0099
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Description:
Michal Zalewski has discovered a weakness in Internet Explorer, which can be exploited by malicious people to cause a DoS (Denial of Service).
The weakness is caused due to a race condition when reloading XML files in iframes. This can be exploited to corrupt memory via specially crafted XML files with nested tags.
Successful exploitation crashes the browser. Execution of arbitrary code has not been proven, but cannot be completely ruled out.
NOTE: Secunia normally doesn't classify a browser crash as a vulnerability nor issue an advisory about it. However, the potential risk of this issue may be more severe than currently believed, which justifies an advisory being issued.
The weakness is confirmed on fully patched Microsoft Windows XP SP2 and Windows 2000 SP4 systems with IE 6.0. Other versions may also be affected.
Solution:
Do not browse untrusted sites.
Provided and/or discovered by:
Michal Zalewski
Changelog:
2007-01-17: Added CVE reference.
Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-January/051620.html
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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